Bug fix: add BUILT_IN to the communication_properties in the class definition.
Merge pull request #21 from proan/hydro-devel

Bug fix: add BUILT_IN to the communication_properties in the class defin...
Update arduino_interface to work with BUILT_IN devices.
Updated to work with BUILT_IN.
Updated gpio_driver to use BUILT_IN.
Merge pull request #22 from proan/arduino

Update arduino_interface
Merge branch 'hydro-devel' into adc

Conflicts:
	arduino_interface/src/arduino_interface.cpp